Adding machine



July 29, 1924. 1,563,171

H. s. STINSON ADDING MACHINE Filed Nov. 6, 1922 5 Sheets-Sheet 1 lNVE/VTOR arc/0L S. Shh/son,-

B A T ORNE y July 291 H. S. STINSON ADDING MACHINE Filed Nov. 6, 1923 5 Sheets-Sheet. 3

H. S. STINSON ADDING MACHINE 5 Sheets-Sheet 4 Filed Nov. 6, 1922 0 o o a o o o o o 0 gwwy [/VVf/VTO/i raid 6.513" so 2 ATTORNEY July 29, 1924.

H. S. STINSON ADDING MACHINE July 29, 1924. 1,503,171

Filed Nov. 6, 1922 5 Sheets-Sheet 5 [N VL'NTOR Harold S. Std/1,50% B W TTOR/VE Y Patented July 29, 1924.

UNITED STATES HARDLD S. STINSON, OF ST. LOUIS, MISSOURI.

ADDIN G MACHINE.

Application filed November 6, 19%. Serial No. 599,414.

To all whom it! may concern.

Be it known that I, HAROLD S. STINSON, a citizen of the United States, residing at St. Louis, in the State of Missouri, have invented certain new and useful Improvements in Adding Machines, of which the following is a specification containing a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

My invention consists in the novel disclosure hereinafter particularly described and distinctly claimed. 7

This machine relates to calculating-ma chines of the type'which requires but ten keys, by the successive operation of which any desired numbers may be set up in the machine preliminary to the adding or other calculating operations.

In the present embodiment of my invention, I have illustrated an adding-mechanism and a recording mechanism that are cooperativly related, so that numbers set up or introducedinto the machine may be recorded. The following are among the objects of the invention 2-- To provide improved means for setting the stops that determine the extent of movement of the racks or actuating members; to provide means by which the operator may determine at any time before actual printing on the record-sheet, what number has been set up; to provide means by which the operator may see at a glance what totals the registers contain; to provide means by which an error may be corrected by the simple depression of one key; and to provide certain details of improved construction and arrangement.

In the drawings,

Fig. 1 is a plan view of a machine embodying a'preferred form of my invention.

Fig. 2 is a plan view of the same, the casing being in section, and partially removed, to show the construction of the vari ous elements of the machine.

Fig. 3 is a vertical longitudinal section, taken on the line 33 of Fig. 2 with parts omitted to avoid confusion and looking in the direction of the arrows.

Fig. 4 is an enlarged detail vertical longitudinal section of the cylindrical revoluble stop-carriage, taken on the line H of Fig.

5, and looking in the direction of the arrow.

Fig. 5 is a detail end-elevation of the oy-.

lindrical stop-carriage and its escapement and connections, parts being broken away, and other parts being sectioned.

Fig. 6 IS an enlarged detail view, partly in section, of one of the stop-depressing (or setting) fingers and its mounting.

Fig. 7 is a detail view of the pin-restoring device, which is located at the rear end of the revolving stop-carriage.

Fig. 8 is a detail side-elevation, partly in section, of the stop-carriage drivingspring mountings, located at the rear end of said carriage, and'looking in the direct1on indica ted. by the arrow 8 of Fig. 9.

Fig. 9 is a rear elevation of the said drivlng-spring mountings, with parts of the revolving stop-carriage broken away.

Fig. 10 is an enlarged detail view of the devlces for preventing reversal of movement of the operating-handle until a full stroke of same is completed.

Fig. 11 is a fragmentary plan-view of the pr nting-hammer mounting, for use in prlnting ciphers in set-up numbers.

Fig. 12 is a detail side-elevation of the non-print key and its connections.

Fig. 13 is a detail side-elevation of the non-add and sub-total keys and their connections.

Fig. 14 is a detail side-elevation of the non-add and sub-total key-connections in a different adjustment from that in which they are shown in Fig. 13.

Fig. 15 is a detail side-elevation of the total-key and its connections, and

Fig. 16 is a detail side-elevation of the error-key and the repeat-key, and connections for the same.

General description.

The presentform of the machine consists primarily of a casing, bed, or frame, having side-members l and 2 rigidly connected together by front and rear members 3 and 3, a suitable base-plate 4, a suitable number of the usual cross-bars or rods (not shown to avoid confusion), and the mechanism mentioned briefly in the next following paragraph. I

The machin shown is provided with three indicators, one of which is a recorder, one a register, and another one showing the numbers set up or introduced into the machine before recorded.

Th register is formed by a serie of nus i the peripher brou ht opposite a sight-opening 6 (Figs.

1 an 3) in the top 0 the casing, so as to indicate any sum which may result from the movement of the inions.

The movements of t e pinions requisite to 1. any number opposite said sight-openmg 6, are effected as the result of striking a lurality of keys 7, which are numbered cm 0 to 9, Fig. 1, and between each key and the pinion operated therefrom are arranged devices which serve to determine the extent of movement of the pinion, when any particular key is struck; these devices being of such a character that the proper pinion will be moved one step as the result of striking the key numbered 1, two steps as the result of striking the key numbered 2, and so on. I will now describe this register in detail.

The register.

Each. pinion 8, Figs. 2 and 3, isoperated directly by a curved rack 9, which forms art of a rack-lever 10 that is mounted oosely to rock or vibrate upon a rack-lever shaft 11 which extends horizontally and has its ends mounted in suitable supports car ried by said side-members 1 and 2 of the machine, and the extent of the movement of the rack-lever determines the extent of rotation of said pinion.

The movement of the rack-lever 10 is regulated by a series of stops 14,'Figs. 1, 3 and 4, that are radially slidable in suitable bearings or, guide-plates of a cylindrical rotating stop-carriage 12.

The cg Zi/ndrica? stop-carriage.

The cylindrical stop-carriage 12 is mounted to revolve upon an suitable bearings, such as the rollers 13, ig. 5, and it extends longitudinally of the machine, near the front end thereof in the present case, said rollers having suitable supports 13 which are secured to the frame of the machine.

Said rollers 13 engage circular rails or flanges 12 located adjacent the front and rear ends of said cylindrical stop-carriage 12, Fig. 2.

There are twenty-four rows, of ten stops each, arranged longitudinally, side-by-side, around the circumference of the said cylindrical-carriage 12, in the present machine, Fig. 5, but I do not limit myself to such number or arrangement of stops 14 as the number may be increased or diminished Without departing from the spirit of my invention or the scope of my claims.

Each stop 14 is provided at its outer end wit-h a cap 15 bearing a number corresponding to the value of said stop.

In the present machine nine rows of these numbered caps 15 are visible through a large glass-covered sight-openin 16, formed in the to of thecasing directly above the said cylin rical stop-carriage 12, whereby the operator can see at a glance just what keys he has depressed befor they have been recorded, andif an error has been made by de pressin the wrong keys, correction can be made 5)} the means hereinafter to be described) before the error has been recorded.

I am aware that the construction and arrangement just explained is subject to various modifications Without the least departure from the nature and principle of my invention and I, therefore, do not restrict myself to specific devices; and, although this feature of the invention is illustrated ,herein to be operated in connection with a revoluble stop-carriage, I Wish to have it understood that the principles of the invention are adaptable to other machines and I do not restrict myself to the useof the invention in any specific adding machine.

The details of making the number-bearing stops, or the numbered caps thereof, visible to the operator before recording, will vary slightly, I think, with every different make often-key machines, but such variations in details will readily suggest themselves to anyone skilled in the art, upon reading the foregoing description.

Any well-known or preferred means may beemployed to hold the stops 14 in a depressed position, in opposition to their springs 14', which encircle free stems of said stops, and bear against th inner faces of said caps 15 and the outer periphery of said cylindrical stop-carriage 1, to normally retain the stops at the limit of their outward movement, in a non-stop position.

In the present machine, I have provided each of said stops 14, with a laterally-projecting lug or ear 17, which may also be termed a spline or fixed key, inasmuch as it slides in a keyway 17 extending laterally from each of the inner stop-bearings of said carriage 12. Fig. 4.

Said stop-splines, studs, or cars on said stops 14 thus prevent turning of the latter in their bearings, and yet axial movement therein is permitted.

Each row of stops 14 is provided with a sliding latch-bar 18 which is mounted in suitable hearings in the rear annular rail orflange 12 of said revolving stop-carriage 12, and in other parts of the latter further forward, Fig. 4,

Each of said latch-bars 18 has a series of cams or lateral arms carrying inclined faces 19, which, upon the depression of a'stop 14 (or a series of said stops) are engaged by the corresponding inwardly-moving spline or stud 17 of the depressed stop, and said latchbar is caused to move horizontally towards the front of the machine against the stress of the latch-bar spring 20, out of the path of said spline or stud 17, until the latter has assed said cam or inclined face 19 of said atch-bar 18, whereupon the latterwill be quickly brought back to its normal position by the power of its said spring 20, and the depressed stop depressed position, as-shown at the, upper right-hand of Fig. 4.

As a result of this construction and operation, the depression of a second stop'in the same row or series of stops'will move the said latch-bar 18 thereof to an unlatchingposition, and the first-locked stop 14 will be released, and will return to normal position by the power of its spring 14, and the second stop will be locked in position, and so on.

Said latch-bar sprin s 20 are, in the present case, attached to t eir respective latchbars 18 at their forward ends, and connected to the rear annular track or carriage-flange 12' at their rear ends; but of course any other arran ement of latch-bar springs will be acceptabfie, provided such springs accomplish the movement ,of said latch-bars in substantially the same way that is herein shown and described.

Said se ental or curved racks 9 are pro-' vided at t eir rear portions with the usual type-carrying plungers 21, adapted to print from to 9 respectively.

The machine here illustrated is adapted to print 999,999,999 and hence nine seg-.

mental-racks 9 are employed.

They (the racks) are arranged side by side, and the supporting-bar of each is pivotally-mounted on said rack-lever shaft 11, and spaced apart by suitable collars.

Each of said rack-bars or rack-levers 10 has the rear end of a horizontal sliding stoplink 22' pivoted to it at 22, Fig. 3, there being aseparate stop-link for each rack.

All of the said stop-links 22 extend forwardly from their rack-levers 10, through bore or interior of the said rotating cylindrical stop-carriage 12, to a point forward of the front end of said carnage, where said links are each provided with a slot 23. In the present case, all of said stop-links 22 are arranged in an arcuate or curved relation, in which their front portions are held and guided by a correspondingly-curved guide-rod or bar, which is suitably supported from the frame of the machine.

Said curved guide-rod is designated by the numeral 24. a

Any suitable slotted guiding-members 25 may be employed to prevent lateral movewill be thereby held in a- .which will now be described.

ment of said stop-links 22, Fig. 4, and Fig. 5, said guiding-members being supported in position by cross-bars or rods 26 which are shown rectangular in cross-section, to prevent rotation or rocking of said supports thereon.

Each stop-link 22 is provided on its u per edge with a vertical stop-lug or pin 2 to engagethe stops 1 1 of its row of stops.

The means for projecting the stops 14 into the path of the stop-link lugs or pins 27, comprises a plurality of keys 7 that are numbered from-O to 9, and arranged in two banks or rows, Fig. 1, and other mechanism Said keys are carried by key-levers 30, which are fulcrumed on a key-lever shaft 28, which has its ends mounted in bearings carried by the opposite side-members 1 and 2 of the frame or casing. Fig. 2.

Each of the keys 7 is provided with a keyspring 29, which, in the present case, encircles the vertical key-shank below the top of the casing, Fig. 3, and has its upper endT-g," secured thereto, while its lower end is fast= ened to the front portion of its key-lever 30, torestore its key to normal elevated position after a depression thereof.

Each of the said key-levers (except the O lever) 30 is, in the present illustration, bent at an angle, toward the right-hand side of the machine, Fig. 2, at a point a little beyond the fulcrum-shaft 28, so that the rear ends of all of said key-levers occupy a position at the right-hand side of the said cylindrical stop-carriage 12, and as closely as possible to the adjacent right-hand sidemember 2 of the casing. This angular form of said key-levers is made use of in the present case in order that said key-levers and their stop-depressing fingers, hereinafter presently described, be located at the side of said cylindrical-carriage, and to avoid locating such mechanism on top of said carriage, where the operators sight of the depressed stop-caps 15 through said large sight-opening 16, as previously described, would be greatly interfered with, if not entirely prevented, by the location of said keylevers and their stop-depressing fingers above said cylindrical-carriage 12.

The inner angular portion of each keylever 30 has its rear end bent to a position at right-angles to the adjacent side-member 2 of the machine casing, Figs. 2 and 6, so that said bent end will project inwardly towards said cylindrical-carriage 12, and a longitudinal slot 31, through which projects a pivot-pin, bolt or rivet 32, by means of which a stop-depressing finger 33-is pivotally-connected to 'said slotted bent portion at the inner end of each of said key-levers.

Said stop-depressing fingers 33 are somewhat of a bell-crank or L-shape in s de-elevation, Fig. 6, and they are pivotally mounted on short shafts 187, which extend longitudinally of themachine, and are mounted on suitable supports shown at the right-hand of the said cylindrical stop-carriage 12, in Fig. 2.

The free arm of said stop-depressing fingers 33 has an inwardly-projecting nose or hammer 34 at its free end, which is brought into contact with one of the said numbered stop-pin caps 15, and depresses same, upon the actuation of its key-lever 30, the value of its stop 14 depending, of course, upon the key depressed.

The present means for 're'vohn'ng the og lz'ndm'cal stop-carriage.

, As the operator sets up an item on the keyboard, by the successive operation of the keys, the said cylindrical stop-carriage 12 is revolved (by means presently described) step by step in a direction the reverse of clockwise, or from right to left, as indicated by the arrow in Fig. 5, one step for each numerical order in the item being set up, as each number-key is depressed and restored.

The said cylindrical stopcarriage 12 may be revolved by the well-known electric-motor drive, or by a spring or weight motor,but in the present illustration I have shown a spring-motor for revolving said carriage, and it will now be described in detail.

A suitable flat motor-spring 35, Figs. 8 and 9, has its inner end secured to and wound upon a horizontal spring-shaft 36 that is journaled in the upper portion of vertical brackets 37 rising from the baseplate 4 of the machine, Fig. 3, and the outer end of said spring is secured to a cross-bar 37 extending between the lower portions of said brackets;

A star-wheel or ratchet-wheel 38, shown more clearly at the right-hand of, and next adjacent, the said motor-spring 35, in Fig. 9, is rigidly fixed on said spring-shaft 36, and the teeth of said ratchet-wheel are engaged by one or more spring-pressed pawls 39 mounted upon the adjacent face of a bevel-gear 40. that is loosely mounted upon said spring-shaft.

Said gear 40 meshes with another bevelgear 41 which is fixed upon or formed integral with the rear end of the said cylindrical stop-carriage 12, Fig. 4.

Fixed upon the other side of said bevelgear 40, is another ratchet-wheel, Fig. 8, designated by the numeral 42, and the teeth of the latter are engaged by one or more spring-pressed pawls 43 which are pivotallymounted upon the adjacent face of one of said spring-motor brackets, to prevent the movement of said bevel-gear (and consequently said cylindrical stop-carriage 12) in but one direction.

The unwinding of said spring 35, and the consequent step-by-step movements of said cylindrical stop-carriage, is controlled by a suitable escapement-mechanism, which will now be described in detail.

The present escapement-mechanism com prises a suitable escapement-wheel 44, Fig. 5, having the well-known peripheral teeth with one radial face and one inclined face, and rigidly secured to the front end of the said cylindrical stop-carriage 12, to rotate with the latter.

Engaging the teeth of said escapementwheel 44 is a control-plate 45 having a tooth 46 at its upper end, and mounted on avpivot shaft or pivots 47, which supporting-brackets 48 carry, the latter rising from the baseplate 4 of the machine, at a point beneath the front end of said cylindrical stop-carriage 12.

Pivoted at 49 to the front face of said control-plate 45 near the upper end of the latter and vibrating therewith, is a dog 50, the lower portion of which is normally held against a pin or stop-stud 51 projecting.

from the front face of said control-plate, by a spring 52, the inner end of which is secured to the said dog at a point below its pivot 49, and the outer end of which spring is fixed to said control-plate.

At the lower end of the control-plate 45, and extending at an angle therefrom, forwardly and downwardly, Fig. 4, is a perforated ear or arm 45, to which is pivoted the lower end of an escapement-pitman 53, which extends upwardly and forwardly and has its upper end pivoted to an arm 54 rigidly mounted upon the key-lever shaft 28, Fig. 3, and held in normal position by a spring 55 attached to said arm 54 at one end, andseeured to the top of the frame or casing at its opposite end.

Said key-lever shaft has a spline or key 56, which extends longitudinally thereof along all of the portion whichis occupied by said key-levers 30, and said spline passes through a slot 57 in each of said key-levers,

so that upon the depression of a key said key-lever shaft 28 will be rocked a limited distance in its bearings, and the escapement-pitman 53 will rock said control-plate 45, and force its tooth 46 toward the front, into engagement with the adjacent lower most tooth 58 of said escapement-wheel 44, and at the same time release said dog 50 from that tooth, whereupon said dogspring 52 will throw said dog into the position indicated by dotted lines in Fig. 5,

with its lower portion in contact with said stop-pin 51.

Upon restoration of the depressed key 7, said control-plate 45 will be moved in a reverse direction, back to its original position, with said tooth 46 out of engagement with the previously-stopped tooth 58 of the said escapement-wheel 44, in which latter position it is shown in Fig. 4, and simul- III taneousl said dog 50 will be thrown into the pat of the next adjacent tooth of said escapement-wheel, and will stop it, and permit the latter to move onestep, (or one tooth)- which is the distance required to bring the lower portion of said dog into contact with its'back-step pin or lug' 59, that projects from the front face of said control-plate, Fig. 5, and this operation is re eated with each depression of a key.

0 rewind the motor-spring 35, a springspool 60 is secured to said spring-shaft 36 and a flexible band or strap 61 has one of its ends fastened to said spool. Fig. 9.

Said flexible band 61 is wound upon said spool a number of turns, and its outer end is secured to' a pin or pivot, Fig. 8, 62 on a curved or 'U-shaped lever 63, which is loosely mounted on the horizontal handleshaft 64, which latter extends across the machine, and has'its ends mounted in 'suit- ,able bearings, Fig. 2.

Said U-shaped lever 63 is normally held in a rearward position (in which it is shown in solid lines in "Fi 8) :by a spring 65, having one of its en s secured to the upper arm of said U-shaped lever, and having its opposite end fixed to the adjacent sprmgmotor bracket 37 thereb eliminating an play or looseness in said and 61, and hol m the latter taut at all times.

en the operator pulls the operatinghandle 78, a rod 66 that is below and parallel .with thesaid handle-shaft 64, and has its ends mounted in opposite vertical rocklevers 72 fixed on said handle-shaft, comes into contact with the inner edge of the lower arm of said U-shaped lever 63, and moves the-latter back, and so rewindssaid spring 35 whatever len h it has previously been unwound, at cm: stroke of said operatinghandle. Fig. 8. 7

It is observed that said rewinding-rod 66 is mounted in the lower portions of the said vertical rock-levers 72. I

Obviously, the diameter of said bevelgears 40 and 41, and also the diameter of said spring-spool 60, may bear anydesired ratio, for a purpose which will hereinafter become evident.

The mam for moving the racks,

The illustrated means for moving the racks 9, comprise a rod 67 extending horizontally between, and carried by, the u per portion of two vertical rock-levers 68, w 'ch are fixed about midway of their height, upon the said rack-lever shaft 11, Fig. 3; a horizontal rod 69 fixed in, the lower 0rtions of said rock-levers 68, and exten ing I the said rack-lever shaft 11, are connected by the lost-motion device com- -.upper rod 6 and 3, and their forward ends secured to suitable brackets or attachments 74' which rise from the base-plate 4 in the present case although they may be located and fastened elsewhere in the machine. Fig. 3.

Said handle-sp s 74 normally hold said lower rock-lever r05 66 in a forward tion, and the said upper rock-lever M5 67, as well as the operatmg-handle 78, are held by said springs in a rearward position, in which they are shown in Fig. 3.

The upper rock-lever rod 73, carried at the upper ends of said handle-shaft rocklevers 72, and the lower rod 69 carried by yieldingly posed of a link 75, having a longitudinal slot 76 in its rear portion, through which slot the said lower rack-lever shaft 69 passes, Fig. 3, so that" the slotted end of said link is mounted lo osel on said last-named shaft or rod 69;" the forward end of said link being pivotally-mounted on said u per rod 7 3 carried by said handle-shaft rockevers 72.

Although I have just described but one "lost-motion device, there may be a plurality of them, and two are shown in the drawing, Fig. 2, one at each side of the racks 9.

ontractile coil-springs 77, are mounted upon said links 75, and have their front ends attached to said u per horizontal handleshaft rock-leverrod 7 3 and their rear ends secured to said lower rod 69 of the said rack-lever shaft rock-levers 68, so that said springs tend to draw said two rods 69 and 73 towardseach other, and normally retain said rod 69 at the forward ends of the said slots 76 of said links 75.

'When the operator pulls said operatinghandle78 forward, the said sprin 77 on said slotted links -pull the said lower rod 69 (at the lower portions of said rackmoving rock-levers 68, Fig. 3), forward a correspon din distance, and thus the said of said rock-levers will be moved downwardly and backwardly, permitting the racks 9 to be moved rearwardly a distance equal to the value of the stops 14 that have been depressed, said racks bein thrown rearwardly by springs 79 attached to curved inte al arms or shanks 97 at the rear ends 0 said racks.

One end of said rack-s rings 79 is attached to the said rack-arms 9 and the opposite ends of said springs are secured to the baseplate 4.

When the operator releases the handle 78, upon completion of its forward stroke, said handle-springs 74 (which are stronger than said springs 79) draw said lower handle-shaft rock-lever rod 66 back to its normal forward position, and the handle will thereby he returned to its rearward normal position, ready for another forward stroke; and simultaneously the racks which had been moved rearwardly will be restored to their normal forward position.

Any suitable means may be used to prevent careless reversal of the handle 78 prior to the completion of its movement, and herein I have shown, Fig. 10, a notched segment or sector 80 that has a vertical extension at its rear end loosely mounted and supported upon the handle-shaft 64, and the toothed-portion of said sector 15 to be secured to and supported at its front end by some adjacent portion of the frame of the machine.

Engaging the teeth of said notched-sector 80 is a two-throw pawl or dog 81', Fig. 10,

that is pivoted to a vertical arm 82 having its lower end mounted upon and fixed to the said handle-shaft 64 alongside of said notched-sector, so that said pawl 81 will engage the teeth of said sector, when the said arm 82 is moved by the operation of the handle 78.

A spring 82 yieldingly holds the said pawl 81 in a normally vertical position, with the lower end of the latter in position to engage the sector-teeth, and prevent the re versal of movement of the said handle 78 in either direction, until a full stroke is completed, when said pawl will pass beyond the terminal teeth of the sector, and will thereat and thereupon be brought back to a vertical normal position, by the action of the pawl-spring.

The speed of operation of the racks 9 and their shaft 11 may be governed by any ordinary or preferred means, such as a dashpot 83, ig. 3, having its lower end pivoted upon a supporting bracket 83 fixed to the base-plate 4 of the machine; the piston rod 83 of said dash-pot being pivotally connected at its outer end to the said upper rack rock-lever shaft 67.

If the handle 78 were pulled forward at excessive speed, so that the link-springs 75 yielded, and the lower rack rock-lever rod 69 lagged behind, in the slots 76 of said slotted-links 75, the racks 9 and other mechanisms driven by the said handle-shaft 11 might not complete their full movement before the handle began its return stroke.

Therefore, to prevent such an occurrence, I provide means for effectually locking and holding the handle 78 against return movement before the rack-carrying shaft 11 has completed its full stroke. Fig. 3.

Such means, in the present illustration, comprises a V-shaped latch 84, pivoted at 84*, and having a hook at the front end of its lower arm, to engage the rounded or pointed lower end 85 of one of the saiilhandle-shaft rock-levers 72 durin the action of the latter when said han e is pulled forward.

The upper or vertical arm 86 projects in the path of a rearwardly-extending arm 87 on the lower end of the adjacent rack-lever 68, so that if the handle 78 is pulled forward at excessive speed, and said lower rack-lever rod 69 lags behind the said hook on said V-shap'ed latch 84 will be engaged by, and will catch and hold, said rounded or pointed lower end of. the adjacent handle-shaft rocklever 72, and thereby hold said handle in a forward position until said rack-shaft 11 has completed its intended stroke, at which time said latch will be released from said lower end of said rock-lever 72,.by the contact of said arm 87 with the vertical arm 86 of said V-shaped latch. Fig. 3.

Means for driving the type-carrying plungers'.

The type-carrying plungers 21, previously mentioned, are to be driven into contact with the usual inking-ribbon, to make an impression on record-paper, by a series of hammers 88 (one for each rack 9) pivotally-mounted upon a horizontal shaft 89 which extends across the rear upper part of the machine casing, Fig. 3.

Each hammer-bar has a lateral stud 9O projecting from one side at a point adjacent its pivotal-shaft 89, Fig. 12, and these studs are adapted to be engaged by latches 91dhaving a notch 91 adjacent their upper en s.

Said latches 91 are pivotally mounted at about midway of their length upon a short horizontal latch-shaft or rod 92 carried by opposite side-members 93 and 94, respective ly, which are of inverted V-shape and have their bases fixed upon a horizontal rockshaft 95 mounted in suitable bearings, Fig. 2, at opposite sides of the frame ofthe machine.

Said latch-shaft or rod 92 is carried by the front arms of said latch-supporting sidemembers 93 and 94, and to the lower portion of one of the latters other (or vertical) arms is pivotally connected the rear end of an o erating-rod or bar 96, Fig. 3, the front end of which is provided with a longitudinal slot 96 and is mounted upon the said lower rack rock-lever rod 69, with the latter in said slot.

When the operating-handle 78 is pulled forward, the said latch-carrying shaft 92, together With said latches 91, will be raised a limited distance.

This action takes place at every forward pull of the handle 78.

A short stud or in 98 is secured to or formed integral wit each of said curved rack-arms 97, and projects laterally from the side thereof at a point adjacent the rear ends of same, Figs. 3 and 12, in the path of its latch.

. Said stud 98 is ada ted to engage the rear edge of the adjacent atch91, at a int -intermediate of its latch-shaft 92 and the lower end of the latch.

When the racks 9 are in their normal or initial position their said studs 98 hold said latch-notches 91 away from the said studs 90 on said hammer-bars; but when a rack is allowed to move backwards to a printing position, said stud 98 of that racks curved rack-arm 97 moves away from the lower portion of its adjacent latch 91, to'the position in which it is shown in Fi 12, with the notched upper portion of said latch in engagement with its hammer-bar stud 90, thereby temporarily pivotall connecting the said latch to said hammer-gar.

Then, when the handle 78 is pulled forward, said hammer-bar and its connected latch 91, will be driven upwardly by the connections between said handle-shaft 64 and said latch, previously described, and a quick upward stroke will be imparted to the hammer 88 carried by said hammer-bar, and the hammer will be caused to strike the appropriate type-plunger 21 of the rearwardly moved rack 9, and thereby print thecorresponding amount upon the usual adjacent record-paper. f

, Upon release of the handle 78, the various parts will be returned to their normal positions by the said powerful handle-springs 7 4. Fig. 3.

The racks 9 are normally in position to print ciphers, and consequently when a cipher is to be printed there is no movement imparted to the rack in the column in which the zero is to be printed; Other means is therefore provided for printing ciphers, and in the present illustration it consists of 9. lug 99 projecting laterally from the rear of each hammer-bar 88, Fig. 11, and arranged to overlap the hammer-bar which is next adjacent on the right, so that when any hammer is raised its hammer-bar lug 99 raises the next hammer to the right, if said hammer is not raised by a latch 91.

The non-print key.

When it is not desired to print an amount, the printing-mechanism may be disabled by means comprising a non-print key 100, Figs. 2 and 12, and suitable mechanismnow to be described. j

Said non-print key 100 has its key-lever 30 in the form of a bell-crank, to the vertical arm of which the forward end of a rod or bar 101 is pivotally connected by means of a suitable screw or rivet, and just in the rear of this pivotal-connection said rod or bar is bent to the left, and extends rearwardly a distance at an angle, to a point near the left-hand side of the machine, so that said bent rod or bar will pass rearwardly at the left side of the said.

cylindrical-carriage 12, in thefree space at t at side of the machine, without interfering with the rotation of said carriage.

e rear end of said bent non-print rod 101 is pivotally connected to the front arm of a V-shaped or bell-crank lever 102 which is fixed upon a shaft 103 extending across the machine, and having hearings in the side-frames thereof.

Said bell-crank lever 102 is located on said shaft 103 at a point close to the adjacent side-fra-me of the machine, and a crank or arm 102 has the same throw as the rear arm 104 of said bell-crank lever,-and is fixed upon said-shaft 103 at a point near the middle of the length of the latter, Fig. 2.

The free ends of the said bell-crank levers rear arm 104, and said mating crank 102, are connected by a horizontal rod 105, which is adapted to engage the rear edges of the lower portions of all the said hammer-latches 91, Fig. 12,,so that upon the depression of said non-print key 100 the said non-print rod or bar 101 will-be drawn forward, and actuate said cranks carrying said latch-rod 105, which latter will throw forward the lower ends of said latches, and disengage the notched upper ends thereof from their studs 90 on the hammer-bars 88, and consequently prevent any movement of the hammers 88.

It is generally necessary to prevent rotation of the previously-described registerpinions 8, except in one direction by the action of the racks 9, and I have therefore provided means for throwing said p-inions out of mesh with said racks as the latter move in one direction, and to throw them into gear prior to the return movement of the racks.

The pinion-shaft 5 is carried by, or mounted upon a swinging frame composed of two side-members 106 and a horizontal shaft 107, to which the rear ends of said side-members are secured, Fig. 3.

The said pinion-shaft 5 is mounted in the forward portions of said side-members 106, so that when the front ends of the latter are elevated a sufficient distance the teeth of the register-pinions will be held clear of the teeth of said racks 9.

A spring 108 has one of its ends secured to the top of the machine or frame, and the lower end of said spring is attached to the adjacent side-member 106 of said swinging-frame, and tends to lift the front portion of the latter, and throw said pinions out of mesh with said racks 9, and hold them in a disengaged position.

Mounted on said pinion-shaft 5 is the upper end of a swinging latch 109, Fig. 13,

which is held by a spring 110 in contact with the teeth on the front end of a rockable ratchet-segment 111 that is pivotallymounted near its rear end upon a pivot 112 on the frame of the machine, and the movements of said ratchet-segment are limited by contact with a lower stud or stop 113 and an upper stop-stud 114 fixed in the frame at opposite edges of the rear portion of said ratchet-segment, Fig. 14.

A spring 115 normally holds the ratchetsegment 111 in contact with said upper stopstud 114, with the forwardtoothed end-depressed, as shown in Fig. 13.

- Secured to the front portion of said ratchet-segment 111 is a curved arm 116 from the side of which projects a pin or stud 117, at a point about midway of the length ofsaid arm, and said stud is adapted to engage a vertical latch 118 pivoted on the frame of the machine at 119; said latch having at its lower end a rearwardlyextending hook orcurved finger 120, that is normally held in contact with the front edge of the lower portion of said swing- 'ing-latch 109 by the previously-mentioned spring 110.

Said spring- 110 has its rear end attached to the upper portion. of said vertical latch 118, at a. point above the pivot 119 of the latter, and the opposite end of said spring is secured to'some adjacent fixed part of the machine frame. Secured to the rack-carrying shaft 11, and adapted to rock therewith is an arm 121 having its upper end out 01f at an angle, Fig. 13, and the upper end of said arm, when in normal forward position (in which it is shown in Fig. 13) rests against the adjacent lower portion 122 of said swinging-latch 109, so that'when said arm 121 is rocked backand forth with the said shaft 11 the said swinging-latch will vibrate upon the register-pinion shaft 5, and cause the tooth 109* on the rear edge of said latch to engage or disengage the teeth of said ratchet-segment-111.

When said tooth 109 of said swinginglatch 109 is disengaged from the teeth of said ratchet-segment 111, as in Fig. 13, by the forward movement of said arm 121, a ratchet-tooth 123 on the front edge of said lower portion 122 of said swinging-latch 109 passes beneath and engages a rectangular stud 124 fixed on the machine frame. movement allows the rear end of the ratchet-segment 111 to move upward into contact with its upper stop-stud 114, as in 'Fig. 13, which limits the upward movement of said rear end, as well as the downward movement of said curved arm 116 of said segment.

When the operator, pulls the handle 78,

This

of said swinging-latch 109, and allows the tooth 109 of the latter to engage the second tooth 111 of said ratchet-segment 111 (which will then be in the path of said latch-tooth 109 and since said segment is then held against upward movement of its toothed-end only by the said spring 115, the said side-members of the register-pinion frame 106, will be swung upwardly at their front ends, carrying said register-pinions 8 with them,'and the latter will be thrown out of mesh with the racks 9. v

During the movement just described, said stud 117 on the said curved-arm 116 of said ratchet-segment I 111, will engage a tooth 118 of said vertical latch 118 and thereby hold said ratchet-segment 111 in its elevated position.

As the handle 78 reaches the end of its forward movement the said rock-arms angflllal upper end will come into contact with t e angular lower end of a downwardly-extending rock-arm or rock-arm-extension 125 carried by the rear end of-the adjacent sidemember 106 of the register-pinion swingingframe, and carry said rock-arm extension with it a slight distance to the rear; which will correspondingly depress the front ends of said swinging-frame and force said register-pinions 8 again into mesh with the teeth of their racks 9, in which position ,said meshed teeth remain and are held during the return-movement of said handle, by the automatic engagement of said tooth 109 of said swinging-latch 109 with the adjacent tooth of said ratchet-segment, as in Fig. 14. On the return of said handle 78, the said rock-arm 121 will again bear against the said lowerportion 122 of the said swinginglatch 109, as in Fig. 13, and disengage the tooth 109 of said swinging-latch from the toothed-end of said'ratchet-segment 111,"and

also disengage the tooth 118 of said vertical latch 118 from said' stud 117 of said curved-arm 116 of said segment.-

Said ratchet-tooth 123 will also engage again the said rectan ular-stud 124, and the machine will be rea y for another opera- 1 tion.

Upon the return of the handle 78 it is necessary that the set-up number he eliminated fromthe cylindrical-carriage 12, in

order that'another number may be set up. i

in the machine.

consisting in part of three depressing-levers. 126, 127 and 128, respectively, which are provided attheir rear ends with T-shaped heads that engage the caps 15 of the nine adjacent zero-stops 14 whose caps are at the top side and front end of said cy1indri cal-carriage 12, but which are not visible through the said sight-opening 16 in the top of the casing above said cylinder, Figs. 2, 3 and 5. j

For such purpose, I have provided means Said three zero-stop depressing-levers are taneously depress all of the said nine adjacent zero-stops .14 whose caps 15 are 10- cated'at the top of said 0 lindrical-carriage 12, which will release al other depressed stops.

W0 of said zero-stop depressing levers, 126 and 128, have cap-engaging heads at their rear ends, which are curved to correspond substantially to the curvature of the periphery of the said cylindrical-carriage 12, and these curved heads are set to move up and down at an angle, Fig. 5, in order that each of said heads may slmultaneously engage and depress four of the adjacent zerostop caps 15 ofthe series that need to be depressed.

The top, or centrally-located lever 127 has a short T-head, inasmuch as it engages but a single zero-stop cap 15, and that is located at the extreme top of the series, between the two side-series of said caps, which are covered and depressed by the adjacent longer T-heads of the said side levers 126 and 128,

igs. 2 and 5.

All of said zero-cap depressing-levers have their front ends bent downwardly at substantially a right-angle, Fig. 3, so that said levers and their downward extensions each form and act as a bell-crank, and I will hereinafter designate said downward-extensions of said levers as the front arms thereof.

All of the front-arms of said levers 126, 127 and 128 are mounted upon a transverse pivot-shaft 132, which extends across the front portion of the machine, in front of said cylindrical-carriage 12, and directly above the forward ends of the sliding stoplinks 22, Figs. 2 and 3, and the ends of said pivot-shaft have bearings in the side-frames of the machine.

Engaging with the front downwardlyextending arms of each of said levers 126,

127 and 128, is the lower cross-bar 133 of a swinging operating-frame, whose opposite side-bars 129 and 130 have their upper ends secured upon a horizontal rock-shaft 131 having its ends mounted in suitable bearin in the frame, while the lower ends of sald side-bars carry the said cross-bar 133.

On said rock-shaft 131 is mounted a rocklever 134, Figs. 16 and 2, the upper end of which is pivotally connected by a rod or link 135 to a rock-arm 136 whose upper free end is in the shape of a pawl-point, Fig. 16.

Said pawl-pointed rock-arm 136 is loosely-mounted upon the handle-shaft 64, and its pointed end is adapted to engage a rathet-tooth 137 which projects from the lower edge of a curved detent 138 whose lower (or rear) end is mounted upon the said lower horizontal rod 69 carried by the said rack rock-levers 68, Fig. 3.

Said curved detent 138 has a recess or curved shoulder 139 formed in its under edge, at a point a slight distance in advance of said ratchet-tooth 137.

Said curved detent is yieldingly forced into contact with a stud 140 on the frame of the machine, by a suitable spring 138", Fig. 16. or by gravity.

Vhen the handle 78 is pulled forward, the said curved detent 138 is moved forward (being mounted on said swinging lower rod 69 of the said rack rockdevers 68), Fig. 3, and rises upon said stud 140 until its ratchettooth 137 is in a position to be engaged by the pointed end of said handle-shaft rockarm 136.

Upon the return movement of the handle, the said ratchet tooth 137 enga es the sharpened upper end of said hand e-shaft rock-arm 136, and moves it backwards a sufficient distance, to cause said rod 135, rock-lever 134, and said rock-shaft 131, to swing the horizontal-bar 133 into contact with the said downwardly-extending front arms of all of said zero-cap depressing-levers 126, 127 and 128; whereupon all of the zero stops of the said series will be depressed at the same time, which will release all other depressed stops 14, Fig. 4.

And before the handle 78 completes said return movement, and immediately after said zero-stops 14 and their numbered-caps 15 have been depressed, the said curved shoulder 139 of said curved detent 138 contacts with said stud 140, Fig. 16, rides on said stud, elevates said detent, and releases its ratchettooth 137 from the pointed upper end of said handle-shaft rock-arm 136, and allows said zero-cap depressing-levers 126, 127 and 128 to assume their normal positions, which is slightly above and free of the caps 15. Springs, such as 127 are used to return said cap-de ressing levers to their normal positions, ig. 3.

One end of said springs 127 is attached to the said cap-depressing lever front-arms, at a point above their pivot-shaft 132, and the opposite ends of said springs are secured to some adjacent fixed part.

The means for carrying.

The means for carryin from one numerical order to the next higher order is as follows Ithas been explained that the racks 9 are returned to their normal forward position by the upper horizontal rod 67 carried by the upper ends of said rack-shaft rock-levers 68, Fig. 3, but I will nowadd that the extent of movement of said racks in a forward direction is limited (except in the carrying operation) by contact of a shoulder or abutment 141 upon the under edge of said racks near their forward ends, Fig. 3, with stoplugs 142 on stop-pawls 143.

of the detent 138 The stop-pawls 143 have their lower ends mounted upon a shaft 144, Fig. 3, which extends horizontal] below the forward portions of said rac s 9.

Suitable collars separate said stop-pawls 143 on said shaft 144.

Said pawls 143 are each connected by a spring to some adj acent part of the machine, so that each paw will be yieldingly urged in a forward position.

The position of said stop-pawls 143 is regulated by a series of rock-detents 145 vibratable on a horizontal shaft 146 (Fi 3 and 2) extending across the machine a ve the forward portions of said racks 9, and having mountings for its ends in the frame of the machine.

The rear end of said rock-detents 145 has an upwardly-projecting finger or shoulder 147, the rear edge of which is inclined or wedge-shaped, as at 148, Fig. 3, while the forward portions of said rock-detents are each provided with two ratchet-teeth 149 and 150, of which the last-named is the longest, and both of said ratchet-teeth project from the under edge of said rock-detents, downwardly and rearwardly, at an angle.

When an amount is to be carried from one numerical order to the next higher order, the stop-pawl 143 for the rack 9 belonging to such higher order is allowed to move into contact with the said longest tooth 1500f the said rock-detent 145, thereby allowing the rack 9, under the force applied to its rack-lever 10 by the upper rack shaft rock-lever rod 67, to move forward an extent just sufiicient to turn the addingpinion 8 for that rack through the distance of one tooth.

The present means for disengaging the said pawl 143 from the tooth 149 of rockdetent 145, consists of a laterally-projecting stud 151 on each register-pinion 8, Fig. 3, which is adapted to come in contact with the said incline 148 on the rear end of said rock-detent; so that when the amount accumulated on a pinion reaches 9, the con tinued rotation of said pinion (as its rack 9 returns) brings said stud into contact with said incline, and depresses the rear end of said rock-detent and correspondingly raises its forward end until its stop-pawl 143 is disengaged from said shortest tooth 149, and springs into engagement with the terminal tooth 150, which projects downwardly farther than said shortest tooth.

Said pinion-stud 151 is then out of the path of said inclined rear end of said rockdetent 145, and allows the latter to return to its normal position.

It is necessary, at every forward pull of the handle 78 to return said pawls 143 to their normal positions, ready for contact with the said first or shortest tooth 149 of said rock-detents 145, in order to pre are the machine for another operation, an for this purpose I have provided two matin side-bars or rock-levers 152, which are fixe upon said stop-pawl shaft 144, one on either side of said series of stop-pawls, Fig. 3, and have their forward ends connected by a horizontal stop-pawl retracting-rod 153, which extends underneath all of said series of stop-pawls.

A rear arm on one of said rock-levers 152 has a rod or link 154 pivoted to it, and this rod extends therefrom rearwardly and downwardly at an angle to the said upper horizontal rack-moving rod 67, where said inclined rod or link 154 is provided with a longitudinal slot 155 through which said rack-moving rod loosely passes and is thereby pivotally mounted on the latter; the said slot allowing the necessary and usual lost-motion.

When a sub-total, or a final-total is to be printed, the register-pinions 8 are retained in mesh with the racks 9' during the backward movement of the latter, and the extent of the backward movement of said racks is determined by contact of said studs 151, Fig. 3, with said fingers 147 on the rear ends of said rock-detents 145, as previously described.

To retain the register-pinions 8 in mesh with the racks, for a total, when the handle 78 is pulled forward, I have provided a rock-latch 156, Fig. 15, pivoted at 157, to engage a pawl 158, whose upper end is mounted upon said pinion-shaft 5.

Said latch 156 and said pawl 158 are yieldingly connected by a spring 159 having one end attached to an arm projecting from said latch, and having the other end secured to the adjacent pawl-body.

Depression of the totalkey 160, through connections hereinafter described, causes said latch 156 to engage a shoulder 158 on the under side of said pawl 158, and lock the latter down, and thereby hold said pinions 8 in mesh with racks 9 during the forward pull of said handle 78.

A connecting-rod 162 connects the totalkey lever 30 to the upper end of a rocklever 163 on shaft 171, and another rod 164 connects the lower end of said rock-lever to the said arm on said latch 156.

An arm 161 having its lower end fixed on said rack-shaft 11, on the completion of the forward pull of the handle 78 contacts with the adjacent lower end of said pawl 158, and releases said latch 156 from said shoulder 158 of the latter, allowing the pinion-shaft 5, carrying the pinions 8, to move upwardly, until said pinions are out of mesh with said racks 9, during the forward movement of said racks, and the registers will be left clear.

When it is desired to take a sub-total, and

the pinions while out of mesh with the retain the accumulated sum on the register, the said inions 8 are allowed to remain in mesh wit the racks 9, during the backward, and also the forward, movement of the racks, and hence the (positions of the pinions remain unchange a I have provided ,.'a sub-total key 165, Figs. 13 and 2, the rear end of whose key-lever ,30 is inthe form of abell-crank, and which is connected by a rod or .pitman 166 to the upper end of a rock-lever 167 mounted on saidshaft 171.

,The lower arm of said rock-lever 167, when the said sub-total key 165 is de pressed, is brought under the rounded front end of the said curved-arm of said ratchetsegment, Fig. 13, and the said ratchet seganent 111 is' thereby raised at its forward end, to bring its first (or lower) tooth into position to be engaged by the said tooth 109 of said swinging-latch 109, upon the forward pull of said handle, and thereb retain the pinions 8 in mesh during boti forward and backward movements of the handle.

As the'pinions 8 are thrown into and out of mesh with the racks 9, it is necessary to provide meansto prevent the rotation of racks and for this purpose I have provided a series of stop-teeth or a. stop-bar having a series of stop-teeth 168, Fig. 3, at a point above the series of pinions, so that said stop-teeth will be automatically engaged by the teeth of said pinions passmg upwardly on either side of said stop-teeth, when the pinions are out of mesh with the racks.

Before taking a sub-total, or a total, it is necessary to return said pawls 143 from contact with said longest tooth, to the shortest tooth 149 of said rock-detents 145.

k To prevent the depression of the totale sai d pawls 143 have been returned to normal position, I have provided a rockable rack-stop frame, consisting of two mating opposite side-members, 169 and 170, Figs. 2 and 3, having their forward ends mounted upon a rock-shaft 171 extending horizontally, just in the rear of the said cylindrical stop-carriage 12, and having its ends mounted in suitable bearings, Fig. 2; the rear (01' upper) ends of said side-members carrying ahorizontal stop-rod 172.

The said rock-levers 163 and 167, previously mentioned, Figs. 13, 14 and 15, are loosely mounted upon said shaft 171, but

the relative movements of said rock-levers thereon is limited by a key-and-slot device of well known form, such as 173 applied to said rock-lever 163, and 174 applied to said rock-lever 167.

\Vhen the racks 9 are in their normal positions, as in Fig. 3, the downward and rearward movement of the said stop-rod 160 and the sub-total key 165, before total-key 160 and said sub-total key 165,

will be permitted.

However, if any of said racks 9 have moved forward an extra tooth-length, the said stopmod 172 will be moved downwardly until it occupies a position in contact with the upper edge of the rack or racks that have been moved forward, and the depression of said keys 160 and 165, will be prevented, until an extra (or idle) stroke of said handle 78 has been made.

Upon depression of the total-key 160, or the sub-total :key 165, it will be necessary that the said stop-links 22 be given free movement, by the release of all depressed stops 14, Fig. 4.

To accomplish this, I have provided another horizontal shaft 175, parallel with said horizontal rock-shaft 171, but in a plane some distance above the latter, Fig. 3, and upon said shaft 175 is fixed the upper end of a vertical latch-bar operatinglever 174, which carries a curved latch-bar head 1'74 at its lower end, (Fig. 7) to simultaneously engage the rear free ends of a series of nine of said horizontal latchbars 18, Fig. 4, on the said cylindrical stopcarriage 12, and thereby release the depressed stops on the latter.

A rearwardly-extending crank-arm 176 has its forward end fixed on said shaft 175, and a vertical connectin -rod 177 has its upper end pivota-lly-attached to the rear end of said crank-arm, and its lower end pivotally-connected to the rear end of crank-arm 178, Fig. 3, whose forward end is fixed upon the said horizontal rock-shaft 171, Figs. 13 and 15.

Depression of the said total-key 160, or

the sub-total key 165, will cause said curved latch-bar head, Fig. 7, to simultaneously bear against the rear ends of said latch-bars 18, and simultaneously release all depressed stops 14, Fig. 4.

The error-key.

If the operator makes an error in setting up the number desired by him, this errone-' ous number can be eliminated from the machine by the depression of an error-key 179, Figs. 1, 2 and '16, which will depress the rear ends of the said three zero-stop depressing-levers 126, 127 and 128, by the conneat-ions previously described, and force the said T-shaped heads of said zero-stop debe in condition for setting up another num: her

This correcting operation can be repeated any number of times, depending upon the ratio of said stop-carriage driving-gears 40 and 41, Figs. 8 and 9, and also upon the diameter of the said spring-spool 60, before it will be necessary to pull the handle 78 to rewind the motor-spring 35.

The non-add key.

It is, of course, sometimes desirable to print an item but not to add it, and I have therefore provided means whereby the pinions 8 will remain out of mesh with their racks 9 during the backward and forward movements of the latter, so that no motion will be imparted to said pinions.

Such means consists of a non-add key 180, 'Figs, 2 and 13, and connections, so that said key u on being depressed, pulls its connecting-rod or link 186 forward, draws the said latch 118 forward, and causes the tooth 118 of said vertical-latch 118, Figs. 13 and 14., to be disengaged from the stud 117 of the curved-arm of the ratchetsegment 111, and allow the said pinion 8 to remain out of mesh with said racks 9, during the backward and forward movements of the latter.

The repeat-key.

It is often desirable to repeat the addition of the same number several times, and to accomplish this function any suitable means may be employed to prevent the automatic return of the stops 1 1 to their normally-retracted position.

In the present case, Ihave illustrated, Figs. 1, 2 and 16, a repeat-key 181, the de pression of which prevents the automatic depression of the zero-stops, by raising the said curved-detent 138, Fig. 16, and bringing the ratchet-tooth 137 thereof above the path of the said pointed rock-arm 136, that is carried by the handle-shaft 64.

A connectin -rod 182 has its front end pivoted to a be ll-crank arm on the rear end of the repeat-key lever 30, and the rear end of said connecting-rod is pivotally-connected to the vertical arm of a bell-crank 183, which is pivoted at 184 to some fixed part.

A pin or stud 185 projects laterally from the horizontal arm of said bell-crank 183, in position to engage the forward part of the said curved-detent 138, and elevate the same, and hold said ratchet-tooth 137 free of the said pointed rock-arm 136, as long as the repeat-key 181 is held in a depressed position.

The principle and mode of operation of my invention will be entirely clear from theabove description of the same, in the one preferred embodiment of the machine herein illustrated, but I would have it understood that my invention is not limited to the specific construction and arrangement shown; the various features being susceptible of use in adding-machines and other calculating-machines of different types.

I claim and desire to secure by Letters- Patent 1. A calculating-machine having a revoluble cylindrical stop-carriage and means in said carriage to visibly indicate the value of the set stopsbefore any record is made.

2. In a calculating-machine, the combination of a suitable stop-carriage with means in said carriage to effect a visible indication of the value of the set stops before any record is made.

3. A calculating machine having a revoluble group of radially sl-idable stops arranged in rows about the circumference of a cylindrical stop carriage, the number of rows of said sto s being greater than the calculating capac ty of the machine.

4. A calculating machine-having a revoluble group of stops adapted to project into the interior of a cylindrical stop carriage.

5. In a calculating machine, the combination of the numbered operating keys, stops operated thereby, and numbered caps connected to said sto s.

6. In a calculating machine, the combination of the numbered operating keys, stops operated thereby, and means for numbering said stops.

7. In a calculating machine, the combination of the operating keys, a suitable stop carriage, stops in. said carria e, and numbering means connected to sa d stops, substantially as described.

8. In a calculating machine, the combina tion of a suitable stop carriage, numbered stops in said carriage, and a plurality of key actuated levers for setting up numbers in said carriage.

9. In a calculating machine, the combination of a suitable stopcarriage, stops in said carriage, means connected to each stop in said carriage to visibly indicate the value of each respective stop.

10. In a calculating machine, a suitable stop carriage, stops in said carriage, means connected to said stops to visibly indicate the valve of the set stops, and a plurality of key actuated levers for setting up numbers in said carriage.

11. In a calculating machine, the combination of a suitable stop carriage, stops in said carriage, a plurality of keys for setting up numbers in said carriage, mechanism for recording said numbers, and means connected to the stops of said stop carriage for e1"- fecting a visible indication of the number set up before any record is made.

12. In a calculating machine, a plurality means for controlling the of operating keys, stops operated thereby, means for numbering said sto s, in combination with means for recor mg numbers set up on said stops. 13. A calculating machine having a re-- voluble stop-carriage carrying radial rackstops, numbered stop-caps on the outer ends of said stops, and a sight opening in the top of the machine above said carriage.

14. In a calculating machine, a suitable stop carriage, stops in said carriage, means for numbering said stops, a plurality of key actuated levers for setting up numbers on said stops, a. plurality of toothed racks, stop links, stop lugs on said stop links, and means for bringing the set stops into operative alignment with said stop-lugs.

15. In a calculating machine, the combination of a suitable stop carriage, stops in said carriage, means for numbering said stops, a plurality of operating keys for set ting said stop, intermediate connections between said keys and said carriage to move the th latter step by step upon the depression of any of said keys.

16. In a calculating machine, the combination of a group of stops arranged in rows about the circumference of a revoluble cylindrical stop-carriage, means for numbering said stops, a plurality of key-actuated levers for setting said stops, a plurality of toothed racks, stop links, sto lugs on said stop links, means for bringing the set stops into operative alignment with said stop-lugs, and means for recording numbers set up on said stops.

17. A calculating-machine having a re? voluble stop-carriage, stops radially mounted upon said carriage, numbered stop-caps on the outer ends of said stops, toothed racks, adding-pinions actuated by said racks when the latter are in mesh with said pinions, movements of said racks in a calculating operation, means for automatically bringing said pinions into out of mesh with said racks, and means for revolving said carriage.

18. In a calculating machine, a suitable stop carriage, stops in said carriage, means connected to said stops to enable the operator to see at a glance the value of the set stops, and a plurality of key actuated levers for setting up numbers in said carriage.

19. In a calculating machine, the combination of the numbered operating keys, stops operated thereby, and numbered stop caps atfixed to said stops.

20. In a calculating machine, the combination of the numbered operating keys, a suitable stop carriage, rows of stops in said carriage, the number of rows of said stops ing greater than the calculating capacity of the machine, and numbered stop caps connected to said stops, substantially as described.

21. In a calculating machine, the combination of the numbered operating keys, a suitable stop carriage, rows of stops in said carriage, the number of rows of said stops be= ing. greater than the calculating capacity of the machine, and means for numbering said stops, substantially as described.

22. In a calculating machine the combination of the nunibered operating keys, a suitable stop carriage, rows of stops in said carriage, the number of rows of said stops be ing greater than the calculating capaclty of e machine, means for numbering said stops, and intermediate connections between said keys and said carriage to move the latter step by step upon the depression of any of said keys.

23. In a calculatin machine, the combination of the numbered operating keys, rows of stops operated thereby, the number oi rows of said stops being greater than the caiculating capacity of the machine, means for numbering said stops, and means for recording numbers set up on said stops.

24. In a calculating machine, the combination of the numbered operating keys, rows of stops operated thereby, the number of rows of said stops being greater than the calculating capacity of the machine, and numbering means afi'ixed to said stops, substantially as described.

25. In a calculating machine, the combination of the numbered operating keys and rows of numbered stops operated thereby, the number of rows of said stops being greater than the calculating capacity if the machine.

Inv testimony whereof, I have signed my name to this specification in presence of two subscribing witnesses.

HAROLD S. STINSON.

Witnesses:

HENRY L. HIenoN, I. PHILLIPS. 

